A reappraisal of families within the order Magnaporthales and description of new endophytic taxa associated with Poaceae plants in China

TY - JOUR

T1 - A reappraisal of families within the order Magnaporthales and description of new endophytic taxa associated with Poaceae plants in China

AU - Feng, JW

AU - Chen, XY

AU - Chen, KY

AU - Druzhinina, IS

AU - Voglmayr, H

AU - Crous, PW

AU - Kubicek, CP

AU - Zhang, CL

PY - 2024/11/27

Y1 - 2024/11/27

N2 - The order Magnaporthales belongs to the class Sordariomycetes within the phylum Ascomycota. Through phylogenetic analyses based on the concatenated multi-locus sequence alignment, five families have been successively introduced within Magnaporthales. This order comprises a diverse array of plant-pathogenic and endophytic fungi, most of which are associated with monocotyledons. However, there has been a lack of systematic exploration of the phylogeny and taxonomy of endophytic Magnaporthales fungi. This study conducted comprehensive phylogenetic and phylogenomic analyses of Magnaporthales, incorporating a substantial number of newly isolated endophytic Magnaporthales taxa from Poaceae plants, one of the most diverse plant families globally. The multi-locus phylogenies revealed six well-supported main clades. One of these main clades, comprising Aquafiliformis, Muraeriata, and Plagiosphaera, was distinct from clusters comprising genera of Pyriculariaceae and Magnaporthaceae (excluding Aquafiliformis, Muraeriata, and Plagiosphaera). Phylogenomic analyses confirmed that the genus Aquafiliformis is sister to the cluster comprising genera of Pyriculariaceae and Magnaporthaceae (excluding Aquafiliformis). Consequently, we propose the introduction of a new family, Plagiosphaeraceae, to accommodate the genera Aquafiliformis, Muraeriata, and Plagiosphaera, in addition to the five previously defined families: Ceratosphaeriaceae, Pseudohalonectriaceae, Ophioceraceae, Pyriculariaceae, and Magnaporthaceae. Furthermore, the phylogenetic analysis of Magnaporthales unveiled significant endophytic taxonomic novelties associated with Poaceae plants in China, leading to the proposal of 11 new genera, and 24 new species within Ophioceraceae, Pyriculariaceae, and Magnaporthaceae. Additionally, two named species within Pyriculariaceae and Magnaporthaceae are transferred to two new genera and combinations. The previously invalid genus Falciphora and its type species, Falciphora oryzae, are also validated.

AB - The order Magnaporthales belongs to the class Sordariomycetes within the phylum Ascomycota. Through phylogenetic analyses based on the concatenated multi-locus sequence alignment, five families have been successively introduced within Magnaporthales. This order comprises a diverse array of plant-pathogenic and endophytic fungi, most of which are associated with monocotyledons. However, there has been a lack of systematic exploration of the phylogeny and taxonomy of endophytic Magnaporthales fungi. This study conducted comprehensive phylogenetic and phylogenomic analyses of Magnaporthales, incorporating a substantial number of newly isolated endophytic Magnaporthales taxa from Poaceae plants, one of the most diverse plant families globally. The multi-locus phylogenies revealed six well-supported main clades. One of these main clades, comprising Aquafiliformis, Muraeriata, and Plagiosphaera, was distinct from clusters comprising genera of Pyriculariaceae and Magnaporthaceae (excluding Aquafiliformis, Muraeriata, and Plagiosphaera). Phylogenomic analyses confirmed that the genus Aquafiliformis is sister to the cluster comprising genera of Pyriculariaceae and Magnaporthaceae (excluding Aquafiliformis). Consequently, we propose the introduction of a new family, Plagiosphaeraceae, to accommodate the genera Aquafiliformis, Muraeriata, and Plagiosphaera, in addition to the five previously defined families: Ceratosphaeriaceae, Pseudohalonectriaceae, Ophioceraceae, Pyriculariaceae, and Magnaporthaceae. Furthermore, the phylogenetic analysis of Magnaporthales unveiled significant endophytic taxonomic novelties associated with Poaceae plants in China, leading to the proposal of 11 new genera, and 24 new species within Ophioceraceae, Pyriculariaceae, and Magnaporthaceae. Additionally, two named species within Pyriculariaceae and Magnaporthaceae are transferred to two new genera and combinations. The previously invalid genus Falciphora and its type species, Falciphora oryzae, are also validated.

KW - 42 new taxa

KW - endophytic fungi

KW - phylogenomics

KW - phylogeny

KW - Plagiosphaeraceae

U2 - 10.5943/mycosphere/15/1/26

DO - 10.5943/mycosphere/15/1/26

M3 - Article

SN - 2077-7000

VL - 15

SP - 6240

EP - 6346

JO - Mycosphere

JF - Mycosphere

IS - 1

ER -